Riveting machine



(No Model.)

5 Sheets-sheet A2. L. E. RHODES. RIVETING MACHINE.

in eases:

(No Model.) vas sheets-sheet 3.

` L. E. RHODES.

RIYETING MACHINE.

No'. 565,568. Patented Aug. 1.1, 1896.

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LlBRHoDBs. RIVBTING MAGHINE yNo1 565,568. Patented Aug. 11, 1896.

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heading the rivets.

UNITED STATES PATENT y EErcE.

LEvERETT E. RHODES, OE HARTFORD, CONNECTICUT, AssieNoR To THE wATEREURY MACHINE COMPANY, OE wATERBURY, CONNECTICUT.

RlvETlNo-MACHINE.

SPECIFICATION forming part of Letters Patent No. 565,568, dated August 11, 1896i Application filed December 26, 1895. Serial No. 573,269. (No model.)

To all whom it' may concern:

Beit known that I, LEVERETT E. RHODES, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Riveting-Machines, of which the following is a specification.

This invention relates to improvements in riveting-machines, more particularly designated as chain riveting machines, and primarily adapted for heading the rivets of bicycle-chains; and the object of the invention is to provide an automatically-operable machine in which the chains to be Operated on will be automatically fed through the machine and the rivets thereof effectively headed.

A further Vobject of the invention is to provide a machine which will automatically head the rivets of bicycle-chains while the same are being continuously fed through the ma-` chine, regardless of the varying distances` apart of the rivets thereof.

A further object of the invention is to provide a machine of this class which is simple in construction and effective in operation and not liable to get out of order.

In the drawings accompanying and forming part of this specification, Figurel is a front View of one form of my improved machine, parts thereof being shown in dotted lines. Fig. 2 is a right-hand end view thereof. Fig. 3 is a partly-sectional plan view takenin line a a, Fig. 1, parts thereof being shown in full lines. Fig. 4. is a rear view of the machine with a part of the powerdriving mechanism removed and part thereof in section. Fig. 5 is a vertical sectional view taken in line Z) b, Fig. 4, and shows part thereof in full lines. Fig. 6 is a top view of my machine on an enlarged scale, partly in section, and having the upper or gripping die removed. Fig. 7 is a detail view of the spinning-rolls in inoperative position. Fig. 8 is a similar view showing the same in position for Fig. 9 is a vertical sectional view of the chain-feeding means. Fig. 10 is a detail view of the chain-feeding or sprocket wheel. Fig. `11 is a detail view of the ratchet-wheel for operatin g said sprocket wheel. Fig. 12 is an enlarged partly-sectional I View taken in line b b, Figyet, of the upper portion of the machine and showing the gripping-die in inoperativeposition. Fig. 13 1s a view similar to Fig. 12, but shows the grippingdie in .position for clamping the chain. Fig. 14. 1s a front partly-sectional view of the machine andv shows the spindlecarrying heads in inoperative position, together with a portion of the mechanism for operating the same; and Fig. 15 is a view similar to Fig. 14 and shows the spindlecarrying heads in operative position.

Similar characters designate like parts in all the iigures of the drawings.

This riveting-machine-which may be used for heading the rivets of numerous articles, and also for various work of somewhat similar character, but which, however, is primarily adapted for heading the rivets of bicycle-chains, and which' will, therefore, be described for the purposes herein in connection with such primary object-in the pre-l ferred form thereof herein shown and described embodies, in a general way, means (designated generally by A) for feeding and holding the chains in position to have the rivets thereof headed; means (designated in a general way by B) for heading the rivets of the chains when the same are fed through the machine; oscillatory means (designated in a general way byv C) for carrying said heading means, and means (designated in a general way by D) for actuating said feeding and holding means and the oscillatory carrying means.

My improved riveting-machine consists, asV

riveting or heading means B consists, in the `IOO form shown, of two heads 25 and 26, pivotally secured adjacent to the upper portionof the casing by means of a pivot-bolt 27, projectin g through overlapping extensions 28 and 29 of said heads. Each of these heads has an arm or lever 30 extending downward into rthe casing 20, and by means of which said heads will be oscillated by the actuating mechanism hereinafter described.

Secured to each oscillatory head are suitable journal-boxesv 35 for carrying the riveter-chuck spindle and its adjusting mechanism, and these journal-boxes, (see Fig. 6,) in the form shown, are composed of two separable members 36 and 37, removably secured together by any suitable fastening means, such as screws 3S.

J ournaled for rotation in the journal-boxes 35 of each head is a chuck-carrying spindle having secured thereon a suitable drivingpulley 39, a suitable recess 40 being formed in the oscillatory head to permit said pulley to be secured in position on the spindle. Each spindle has a tapering bore 4l at its inner end adapted toreceive the tapering shank 42of a chuck. These chucks may be of any well-known or desired construction adapted to receive the riveters; but in view of the construction of rivet-ers preferably used each chuckis herein shown having a suitable elongated recess 43.

The riveters may be of any suitable or wellknown construction; but in the preferred form thereof, for the purpose hereof, are shown consisting of spinning-rolls 44, having their r0- tatin g faces so shaped or formed that when in posit-ion they will conform to the particular shape of head that it is desired the rivet shall assume. In the construction shown,however, eachfspinning-roll 44 is preferably constructed of two members or rolls, the inner portion of each member or roll of a pair being concaved or groovedv to afford spinning-surfaces for heading the rivets of the chains, and when so constructed the rolls will form substantially. a iiat rounded rivet-head.

Although for the purposes of this specification the riveters are described as spinningrolls, andthe spindles are set forth as rotatable, it is obvious, however, that such construction or operation is not necessary, and doesnot constitute an essential part of my invention, as the riveting operation may be performed by any suitable construction of riveters carried by the swinging heads on the oscillatory movement alone and without the rotating` movement thereof.

Owing to the severe end thrust of the spindle suitable antifriction-bearings are provided for the ends thereof, and in the form4 shown each spindle has an annular groove or recess 45 in its outer end, whereby it forms one member of the bearing, and also has an axial bore 46, having the wall thereof, adjacent .to its outer end, threaded. This axial bore preferably extends through said spindle and opens into the tapering bore 4l, whereby a rod can be inserted to eject the chuck should the same become wedged too tightly in the spindle. A disk or block 47, forming the otherrmember of they bearing, is secured adjacentto the end of each spindle by any suitable fastening device-such as a screw 4S-and has a suitable annular groove or recess 49 on its inner face, thereby forming, in

connection with the annular groove or recess l in the end of the spindle, a runway for the antifriction-balls 50 placed therein. It will be understood, however, that any other suitable antifriction-bearings might be used, if desired. As one means for adjusting these spindles 40', and thereby the spinning-rolls 44 toward and from each other, a suitable block 55, having an axially-threaded bore 56 and a recessed end 57, adapted to encircle the disk 47 and a portion of the spindle 40' and permit the rotation of the same relatively thereto, is clamped in the outer `end of one of the journal-boxes of each head. A suitable adjusting device 5S works in the threaded bore of the block and engages the end of the block 47, whereby on the adjustment of said devices-58 the spindles 40', together with their chucks and spinning-rolls, can be adjusted to any desired position to permit the rolls to engage the rivets.v of the chain. A check-nut 59 is. disposed on each adjusting device at the outer end of the block 55 'and the journal-box, wherebythe spindles can be held in their adjusted positions against accidental displacement.

A suitable supporting-frame 60, adapted to carry the chain feeding and holding mechanism A, is secured to the upper portion of the casing between the inner faces of the, oscillatory heads 25 and 26 by suitable fastening devices-such as screws or bolts (i1-and in a general way this frame 60 embodies two parallel extending sides 62, having brackets or supporting extensions 63 and 64 (shown in this construction inl the rear of the machine) for the purposes hereinafter described. It is obvious, however, that any suitablemeans might be used in place of that described for carrying or supporting the feeding and holding mechanism.

The feeding and holding means A for the chains, in the preferred form thereof herein shown and described, consists of a suitable rotatable member or hubl 70, (see Fig. 9,) eccentrically and removably supported intermediate of the two sides 62of thesupportingframe 60 and adjacent to and intermediate of the spinning-rolls 44, and in the form shown this hub or member 7 Ois rotatably carried on an eccentric journal oraxle 7l, having differential diameters whereby the same can be inserted into its bearings in the sides 62 of the supporting-frame, that part thereof having the smallest diameter fitting within a bearing of one side frame 62 and that part thereof having the largest diameter fitting within abearing of the other side frame 62, whereby the intermediate portion thereof extends through the hub or member 7 0andon which said hub is rotatable.

By turning the head 72 of the journal or IOO IOS

`also secured to said slide-rod.

axle the eccentrically-disposed hub mounted on said journal can be adjusted, together with the chain-feeding means carried thereby, and hereinafter described, into position to bring the rivets carried by the chain into alinement with the spinning-rolls or riveters. To illustrate, if the chain should be fed along with its contained rivets above or below the riveting-rolls, the eccentric would be turned to either lower or raise the feeding means sufficiently to bring the rivets into proper alinement with the said rolls. This hub or rotatable member is preferably constructed of dierential diameters in the nature of steps.`

A suitable supporting-die, preferably in the nature of a feeding-wheel-such as a bicycle sprocket-wheel -having elongated slots 81 extending therethrough, whereby the same can be adjusted relatively to the hub, is removably secured to that portion of the hub having the largest diameter. The means for imparting motion to said feeding-wheel consists, in the form shown, of a suitable ratchet- Wheel 82, havingirregularly spaced or divided teeth 83 and 83 of alternately short and long lengths. This ratchet-wheel 82 is secured on that portion of the hub having the smallest diameter, and in parallelism with'the sprocketwheel.

As a means of securing the feeding-wheel and the ratchet-wheel to the hub, said hub is shown provided with an annular flange 73, having apertures extending therethrough. Suitable fastening devices (herein shown in the nature of screws 74) extend through said flange-apertures, and through the elongated slots 81 of the sprocket-wheel, and their outer ends engage threaded apertures 83 in the ratchet-wheel, whereby said sprocket-wheel and ratchet-wheel are rmly and rigidly held on the hub for rotation therewith.

One means for actuating the sprocket-wheel 80 consists of a sliding rod 90, having a flat face 92,`mounted in bearings 91, formed on the supporting-frame G0. A pawl 93 is piv- `otally secured to said slide-rod 90, and is caused to engage the teeth of the ratchet- Wheel 82 by means of a suitable spring 94, This rod is provided at its outer end in the rear of the machine with a stop or elongated head 95, having a laterally-projecting stud 96 for the purpose hereinafter set forth. A coiled spring 97 encircles said rod intermediate of said stop or head and one of the bearings 91.

A suitable actuating-lever 100 (hereinafter designated as the feed-actuatinglever) is pivoted adjacent to the end of the supporting extension 63 of the' supporting-frame 60, and is provided adjacent to its lower end with a suitable antifriction-roller 101, adapted to be engaged by a cam (hereinafter described) for operating said feed-actuating lever. The upper end of the lever is provided with an elongated slotted head 102,`adapted to work on the stud or pin 96 of the slide-rod, whereby, on the operation of the feed-actuating lever ratchet-wheel.

100 in one direction, said slide-rod 90 will be 4actuated against the tension of its spring 97 to turn the ratchet-wheel 82, by means of the pawl 93, one tooth, said slide-rod being actuated in the opposite direction by the spiral spring 97, to permit the engagement of said pawl 93 with the next succeeding tooth of the As a means for regulating the throw or movement of said lever 100, and thereby regulating the movement of said sliderod 90, the upper end of the lever is pro- Vvided with a threaded aperture adapted to receive a threaded adjusting-screw 103, the inner end of which engages the stud or pin 96 of the slide-rod, and thereby limits the movement of the slotted end of the lever relatively to the stud or pin of the rod, a suitable check-nut 104 being provided for securing the adj usting-screw against movement. i

As a means for preventing the backward rotation of the ratchet-wheel 82, a suitable adjustable pawl is secured to the. supportingframe, and in the construction thereof shown the supporting-frame is provided with an arcshaped slot 106, through which a clampingbolt 107 extends. (See Fig. 6.) The inner end of this bolt 107 engages a pawl-carrying arm 108, pivotally secured to the supportingframe 60, whereby said arm can be clamped in any desired position relatively to said arcshaped slot. Pivotally secured to the upper end of this pawl-carrying arm 108 is a pawl 105, adapted to engage the teeth of the ratchet, a suitable spring 109 being secured to the frame and engaging said pawl to l'OO press the same into engagement with the ratchet-wheel 82, whereby the backward movement of said ratchet-wheel is prevented.

In the construction shown the sprocketwheel constitutes, to a certain extent, not only a feeding device but also a lower or holding die, and one means for gripping or The gripping-die 115, in the form shown, is

provided with a concaved gripping-face 116 and a shank 117, having an aperture extending therethrough, and is secured to the end of the supporting-arm by means of a bolt 118, extending through said aperture andl into said arm. lt will be understood, however, that any suitably formed or shaped grippingdie might be used, according to the construction. of the chains or articles placed in the machine, to have the rivets thereof headed.

The shaft 111 extends beyond the bearings 112 at one side thereof,fand has keyed or secured thereon in any desired wayone end of a downwardly-extendin g lever 120, said lever IIO being provided with a sleeve 121, adapted to receive said shaft 111. In order to secure l the shaft against longitudinal displacement,

one end thereof is provided with a suitable head 113, and theopposite end is adapted to receive a clamping-nut 114. The lower end of this lever -which will be hereinafter designated as the gripping-die-actuating lever 7 is provided with an antifriction-roller 122, adapted to be engaged by a cam, in the manner hereinafter set forth, for operating said gripping-die-actuating lever, and thereby operating the gripping-die 115 by means of its carrying-arm 110, to clamp and release the chain, respectively.

As a means for firmly holding the chains in engage-ment with the sprocket-wheel, a suitable spring has one end thereof secured to the gripping-die-carrying arm 110 and has its other end in position to press said chain on to the sprocket-wheel.

The means D, for actuating the chain feeding and holding means A and the oscillatory heads, consists, in the preferred form thereof herein shown and described, of suitable driving mechanism embodying cams operatively engaging the lower ends of the levers 100 and 120, and suitable toggle-levers operatively connected with the driving mechanism and with the downwardly-extending arms 30 of the oscillatory heads.

In the preferred construction of driving mechanism herein shown a suitable bracket is bolted, in the preferred construction of the machine, at any suitable place 0n the rear side of the casing20, and comprises a bracketplate 141 and a sleeve 142, (see Fig. 4,) adapted to receive a driving-shaft 143 of differential diameters, having a dri ving-pulley 146 loose thereon. The inner end of this drivin g-shaft carries a beveled pinion 144, adapted to mesh with the beveled gear hereinafter` described. That portion of the shaft 143 having the largest diameter, as 145, abuts against the free end of the sleeve 142 and is substantially of the same diameter as said sleeve, for the purpose hereinafter set forth.

Secured to the casing 20, substantially at rightr angles to the rotating shaft 143, is a tubular bracket 150, in the nature of an axle, adapted to receive a driven shaft 151, carrying at its outer end a suitable beveled gear 152, engaging with the beveled pinion 144 on the driving-shaft 143.

Rotatably secured on the tubular bracket 150is a cam-wheel 154. This cam-wheel is secured to thebeveled gear 152 by any suitable means, such as by screws or bolts 156, and has a depressed portion 155 and a cam-face 157, adapted to engage the antifriction-roller 101 of the lever 100. Secured in any desired way to this cam-wheel 154 for rotation therewith is a second cam 154', having a depressed portion 153 and a cam-face 159, adapted to engage the antifriction-roller 122 of the lever 120. It will be understood, however, that these cams might be secured to the beveled gear and to each other in any other suitable way, or that the cam-faces thereof might be constructed on one wheel, if desired. A spring is secured to the casing and has its free end in engagement with the lower end of the lever 120, to thereby press said lever into engagement with said cam 154.

Secured to the inner end of the driven shaft 151, which, in the construction shown, eX- tends through the casing 20, is a suitable crank-wheel 161. Secured to the inner wall of the casing 20 is a block 162, having a guideway therein, (shown in the nature of a T- shaped way 163, Fig. 3.)

Iivotally secured to the lower ends of the arms 30 of the oscillatory heads 25 and 26 are suitable toggle-levers 164, having their inner ends pivotally secured together by means of a pivot-bolt 165, having one of its ends secured to a T-shaped block 166, working in the way 163 of the iixed block 162. A suitablel crank-ar1n166 connects the crank-wheel 161 with the pivotal ends of the toggle-levers v164, whereby on the rotation of said crankwheel said toggle-levers will be actuated and the spindle-carrying heads 25 and 26 oscillated in a manner obvious from the foregoing description.

As one means for throwing the actuating mechanism into and out of operation a suitable clutch device is provided. In the form shown thereof the power driving-wheel 146, which is loose on the driving-shaft, is provided with a tapering or cone-shaped recess 147, and is adapted to be engaged by a coneclutch 170, which is keyed to the enlarged. portion 145 of the driving-shaft and is loose on the sleeve 142 of the bracket, which is of substantially the same character as said enlarged portion of the shaft and is slidingly adjust-able thereof. This cone-clutch is provided with a grooved hub 171, adapted to receive the studs 172, projecting from the bifurcated end of a bell-crank lever 173, which lever is pivotally secured to an extending arm 175 of the bracket 140. Secured to the casing is a suitable treadle mechanism, which in the form shown comprises a suitable treadle 130, in position to be actuated by the operator from the front of the machine and having its rear end secured to a shaft 131, carried in suitable bearings 182. A link 183 connects this shaft with a vertical lever 134, which has its upper end secured to said bellcrank lever 173. A suitable spiral spring 135 has one of its ends secured to the casing and its other end secured to said treadle for holding the treadle in its inoperative position. On the downward movement of the treadle vthe cone-clutch will operatively engage the power driving-wheel 146, and thereby receive motion from said wheel and rotate the shaft 145 to impart motion to the actuating mechanism.

A suitable fastening device is secured to the casing adjacent to the treadle for holding said treadle in its operative position and in the IIO the wheel to project between the body-links,

the chain being held in position by the spring 130. The treadle is then depressed and held in such position by the latch 190, whereby the friction-clutch is put in operation and power imparted from the driving-wheelto the beveled gear 152, whereby on the rotation of the cams 154 and 15,4 the feed-wheel-actuating lever 100, which in its inoperative position rests within the depressed portion 155 of the cam 154, is forced outwardly and engaged by the cam-face 157 of the cam, thereby operating the slide-rod and its pawl 93 to rotate the ratchet-wheel 82 one tooth, and thereby the sprocket-wheel, to bring the rivets of the link into position to be headed. On the continued rotation of said cam-wheel the gripping-die-actuating lever 120, which in its inoperative position rests in the depressed portion 158 of the cam 154', is engagedby the cam-face 159 andforced outwardly against its spring 160, whereby the gripping-die arm 110 is oscillated into position to permit the die 115 thereof to clamp or grip the chain on the `sprocket wheel, said sprocket wheel being l prevented from slipping by the pawl 105, and

said gri ppin g-die being rigidly held in position by the continued engagement of the cam-face 159 with the lever 120 throughout the entire spinning operation of the rolls 44. On the continued rotation of the cam-wheel shaft 151 the crank-wheel 161 actuates the togglelevers 164, to spread the levers30 of the oscillatoryheads, whereby said heads are oscillated into position to have the spinning-rolls 44 operatively engage one of the rivets of a link, said spinning-rolls being preferably rotated in opposite directions, to thereby prevent movement of the chain in either direction. On the continued rotation of the camwheel shaft 151 and the crank-wheel 161 the spinning-rolls--after the completion of the rivet-head-are moved by means of the oscillatory heads away from said rivet. The gripping-die 115 is then carried out of position to clamp the chain, and the slide-rod 90, by means of its spring 97, moved into position, to permit the pawl 93 thereof to engage another tooth of the ratchet-wheel S2, to thereby turn the ratchet-wheel 82 and its sprocketwheel to carry the chain, forward one rivet, when the end of the feed-wheel-actuating lever 100 is next engaged by the cam-face 157.

In bicycle-chains as ordinarily constructed two pairs of plate-links 195 have their ends secured to the ends of one body-link 194, so`

that the distance between the rivets of the body-links is relatively sm all, compared with the distance between the rivets of the platelinks; Hence, in machines as heretofore constructed, it has been necessary, after the chain has been run once through the machine, to reversethe chain and run it through a second time, in order `to thoroughly head all the rivets thereof. In this construction, however-owingto the varyinglengths of the teeth 83' and 83" of the ratchet-wheel 82-this reversal of the chain is unnecessary, as the teeth are so arranged (see Fig. 11) that they will carry the sprocket-chain forward a distance suiicient to have each rivet thereof headed; that is to say, by having long and short teeth the sprocket-wheel will have movements of varying lengths, and the chain will be carried forward a long or short distance to correspond with the distance between the-rivets ofthe `plate and body links.

It is preferred to move both of the spindlecarrying heads, as described; but this is not essential, inasmuch as the machine will be operative if only one is moved and the other is stationary.

By having the feed-wheel and ratchet-wheel removable from the hub different forms of feed and ratchet wheels can be substituted therefor to accord with the different constructions of chains, and by havingthe hub removable some other suitable form of lower gripping-die can be substituted therefor.

Having described my invention, I claim- 1. In a machine of theclass specified, the

combination of means for carrying and supporting Work having rivets to be headed, and means for imparting thereto intermittent movements of relatively .varying lengths; of rivet-heading devices located on each side of IOO the path of the work; and means for actuating said devices.

2. The combination with riveting-heads, of a chain-feeding mechanism disposed between said heads; and automatic means for imparting movements of relatively varying lengths to. said mechanism.

3. In a machine of the class specilied, the combination with means for carrying and supporting the work, and for imparting thereto movements of relatively varying lengths; of oscillatory swaging devices; and mechanism for actuating the carrying and supporting and swaging devices.

4. The combination of means for carrying and supporting a chain carrying rivets to be headed; mechanism for imparting to said IIO means movements of relatively varying.

lengths; oscillatory means for heading the rivets; and mechanism for actuating said carrying and supporting means and said oscillatory means.

5. The combination with riveting-heads, of a sprocket-wheel for supporting and carrying a chain having rivets to be headed; a ratchet` `wheel having teeth of relatively varying lengths; a pawl'engaging s aid ratchet-Wheel; and mechanism for automatically actuating said pawl.

6. In a riveting-machine, the combination With a device for carrying and supporting work having rivets to be headed; and means for imparting to said device relatively varying movements; of a clamp; heading mechanism; and mechanism for actuating the clamp and heading mechanism.

7. In a riveting-machine, the combination of rotative means for carrying and supporting Work having rivets to be headed, and means for imparting alternately short and long movements thereto; oscillatory means for clamping said Work in position; oscillatory means for heading said rivet; and mechanism for actuating each of said means.

8. The combination of intermittently-rotative means for carrying and supportingvvork having rivets to be headed, and means for imparting alternately short and long movements thereto; intermittently oscillatory means for clamping said rivet in position; heading mechanism for said rivets, and embodying an intermittently oscillatory and continuously-rotative device; and mechanism for actuating each of said parts.

0. In a riveting-machine, the combination with an adjustable device for carrying and supporting Work having a rivet to be headed; and mechanism for imparting to said device relatively varying movements; of means for holding the rivet in position; means for heading said rivet; and suitable actuating mechanism.

10. In a riveting-machine, the combination with a rotative device for carrying and supporting work having a rivet to be headed; an eccentric for adjusting said device; means for holding the rivet in position oscillatory headers; and suitable actuating mechanism.

11. In a riveting-machine, the combination of intermittently-rotative means for carrying and supporting Work having a rivet to be headed; an eccentric for adjusting said means; an oscillatory clamp for securing the Work in position; rotative and adjustable heading devices; means for supporting and oscillatin g said devices; and actuating mechanism.

12. A feeding device consisting of a supporting means, a rotative hub eccentrically mounted thereon, for adjustment; a sprocket- Wheel mounted on said hub; and a ratchet- Wheel also mounted on said hub.

13. A feeding device consisting of an adjustable supporting means; a sprocket-Wheel mounted thereon; and a ratchet-Wheel also mounted on said support-ing means and having teeth of relatively varying lengths and operative to impart relatively varying movements to the sprocket-Wheel.

14. In a feeding device for a riveting-machine, the combination of supporting means,

a rotative hub, eccentrically mounted thereon,t`or adjustment; asprockct-Wheel mounted on said hub, and rotatable therewith; and a ratchet-Wheel also mounted on said hub, and in operative engagement with said sprocketwheel, and having teeth of alternately short and long lengths.

15. The combination of means for carrying and supporting Work having rivets to be headed; rotative means having alternately short and long teeth, for imparting to said supporting and carrying means curvilinear movements of relatively varying lengths; means for heading said rivets and means for actuating said carrying and supporting means and said rivet-heading means consecutively and intermittently.

16. The combination of supporting means;

-a sprocket-Wheel rotatively supported thereon; a ratchet-Wheel also supported thereon and having teeth of alternately short and long lengths adapted to impart relatively varying movements to said sprocket-Wheel; a slide-rod mounted on said supporting means and carrying a pawl engaging the teeth of said ratchet-Wheel; means for actuating said slide-rod in one direction, to thereby operate said ratchet-Wheel and thereby the sprocket- Wheel; and a spring for returning said sliderod to its normal inoperative position.

17. The combination of supporting means, a rotatable hub, eccentrically supported thereon, for adjustment; a sprocket-Wheel supported on said hub; a ratchet-Wheel also supported on said hub; a spring-actuated slide-rod mounted on said supporting means, and carrying a spring-actuated pawl engaging the teeth of said ratchet-Wheel; and means for actuating said slide-rod, to operate said ratchet- Wheel and thereby the sprocket- Wheel.

1S. The combination with oscillatory heads, each having an extended arm or lever, of a crank-shaft located between said arms; a toggle for actuating said arms; a link connecting the toggle with the crank-shaft; and a guide for said link.

19. In a riveting-machine, the combination of a support-frame; having means carrying a rotatable hub eccentrically thereon for adjustment; a sprocket-Wheel mounted on said hub a ratchet-Wheel in operative engagement with said sprocket-Wheel and also mounted on said hub, and having teeth of relatively varying lengths; a spring-actuated slide-rod mounted on said frame, and carrying a paWl for operating said ratchet-Wheel and thereby the sprocket-Wheel; an oscillatory arm pivoted to said supporting-frame, and adapted tocarry a gripping-die; a feed-actuating lever pivoted to said supporting-trame, and having its upper end in engagement With the slide-rod; a gripping-die-actuating lever also pivoted to said frame, and having its upper end in operative engagement with the gripping-die lever; and mechanism for operating said feed and gripping-die levers.

20. In ariveting-machine, the combination of a supporting-frame, having means carry- IOO IIO

ing a sprocket-wheel, a ratchet-Wheel in operative engagement Withthe sprocket-Wheel;

a spring-actuated 'slide-rod mounted on said frame, and carrying a pavvl for actuating said ratchet Wheel and thereby the sprocket- Wheel; a feed-actuating lever pivoted to said frame, and having its upper end in engagement with said slide-rod; an oscillatory gripping-die-carrying arm mounted on said frame, and adapted to carry a gripping-die; a gripping-die-aciuating lever pivoted to said frame, and having its upper end in operative engagement with the oscillatory arm; and mechanism for actuatingsaid feed and gripping-die actuating levers.

2l. In a riveting-machin e, the combination of a supporting-frame, having means carrying a sprocket-Wheel, a ratchet-Wheel in operative engagement with the sprocket-Wheel; means for actuating said ratchet-wheel and thereby the sprocket-Wheel; an oscillatory arm adapted to carry a gripping-die, also mounted on said frame; a spring in position to engage the sprocket-Wheel for holding the rivet in position to be headed; and means for actuating said oscillatory arm.

22. In ariveting-machine7 the combination of a supporting-frame; having means carrying a hub eccentrically mounted thereon for adjustment; a sprocket-Wheel removably mounted on said hub; a ratchet-Wheel also removably mounted on said hub, and in operative engagement with the sprocket-wheel, and having teeth of relatively varying lengths; a spring-actuated slide-rod mounted on said frame, and carryin ga spring-actuated paWl for actuating said ratchet-Wheel and thereby the sprocket-Wheel a feed-actuating lever pivoted to said frame, and having its upper end in engagement With said slide-rod, and carrying means for regulating the movement of said lever, and thereby the movement of said slide-rod; a gripping-die-carrying arm mounted on said frame, and adapted to carry a gripping-die; a gripping-die-actuating lever pivoted to said frame, and having its upper end in operative engagement With the gripping-die-carrying arm; a spring secured to said lever, and adapted to engage the sprocket-Wheel, to hold the rivet in position to be headed; a spring-actuated pavvl adjust-ably secured to said frame for preventing the return movement of said ratchet-Wheel; and mechanism embodying cams, for actuating said feed and gripping-die actuating 1evers.

23. In a riveting-machine, the combination of a base; a'pair of oscillatory heads carrying riveting devices pivotally secured to said base, and having downwardly-extending levers; toggle-levers coiihected to said downwardly extending levers; Work feeding means having a differential movement located intermediate of said heads; and mechanism for actuating the toggle-levers and Work-feeding means.

24. In ariveting-machine, the combination of a base, a pair of oscillatory heads carrying riveting devices pivotally secured thereto, and having downward-extending levers; toggle-levers pivoted to said downwardlyextending levers; a sprocket-Wheel supported on said base; a ratchet-Wheel also supported on said base, and in operative engagement with said sprocket-Wheel; a spring-actuated slide-rod mounted on said base, and carrying a pawl for actuating said ratchet-Wheel and thereby the sprocket-Wheel; and mechanism for actuating said slide-rod and toggle-levers, to thereby rotate said sprocket-Wheel and` oscillate said heads. i

. 25. In a riveting-machine, the combination of a supporting-frame, a pair of oscillatory heads pivotally secured thereto, and adapted to carry spinning-rolls, and having downwardly-extending levers; toggle-levers pivoted to said downwardly-entendi ng levers; an eccentrically-adj ustable hub mounted on said supporting-frame a sprocket-Wheel mounted on said hub; a ratchet-Wheel also mounted on said hub, and in operative engagement with said sprocket-Wheel, and having teeth of relatively varying lengths; spring-actuated sliderod mounted on said frame; a lever pivoted to said frame, and having its upper end in engagement with' said slide-rod; and mechanism for actuating said lever and 4said toggle-levers, for operating the sprocket-Wheel and oscillatory heads. y

26. A chuck-carrying spindle having an annular groove in its outer end; a block also having an annular groove, and forming, with the groove of the spindle, a runway for the reception of antifriction-balls; a memberhaving a threaded bore and having a recessed end inclosing said block and a part of said spindle; and an adjusting-screw engaging the threads of said member, and having its inner end engaging said block for adjusting said spindle.

27. In a riveting-machine, the combination of a supporting-frame; a pair of oscillatory heads pivotally secured thereto, and adapted to carry riveters, and having downwardlyextending levers; toggle-levers pivoted to said downwardly-extending levers; rivet-feeding mechanism supported on said frame; afeedactuating lever pivoted to said frame for actuating said feed mechanism; a grippingdie-carrying arm also supported on said frame, a gripping-die-actuating lever pivoted to said frame, and in operative engagement with the carrying-arm; and driving mechanism supported on said frame, and comprising a driving-shaft carrying a pinion; a driven shaft carrying a gear in mesh with said pinion; cam members rotatable with said gear for operating the feed and gripping-die actu ating levers; and a crank-Wheel on said driven shaft in operative engagement With the toggle-levers, to thereby oscillate said rivetercarrying heads.

28. In a riveting-machine, the combination of a supporting-frame, a pair of oscillatory IIO heads pivotally secured thereto, and adapted to carry riveters, and having downwardlyextendinglevers; toggle-levers pivoted to said downwardly-extending levers; rivet-feedin g mechanism supported on said frame; a feedactnating lever pivoted to said frame for actuating said feed mechanism; a grippingdie carrying arm also supported on said frame, a grippin g-die-actuatin g lever pivoted to said frame, and in operative engagement with said die-carryin g arm; and drivin g mechanism supported on said frame, and comprisingya driving-shaft carrying a pinion; a driving-Wheel loose on said shaft; clutch mechanism in position to engage said driving- Wheel treadle mechanism for operatively engagin g said clutch mechanism; a driven shaft supported on said frame; a gear thereon in mesh With said pinion; cam members in operative engagement with said gear, androtatable therewith for operating the feed and gripping-die actuating levers; and a crank- Wheel on said driven shaft in operative engagement with the toggle-levers, to thereby oscllate said riveter-carrying heads.

29. In a machine of the class specified, the combination of a pair of riveters, one of Which is movable toward and from the other on a fixed axis; an automatically-operable feeding and holding mechanism intermediate of said pair of riveters, and constructed to feed a chain or other article between said riveters, to simultaneously present the oppositel ends of its rivets to the action of said riveters, and to hold said chain or article firmly While its rivets are being headed, said mechanism including two holders, one of which is su pported for oscillatory movement toward and from the other holder.

30. rllhelcomloination with automatic means for intermittingly advancing a chain carrying rivets to be headed, of a clamp; and means for intermittingly actuating said clamp.

LEVERET' E. RHODES.

lVitnesses:

FRED. J. DOLE, R. XV. PITTMAN. 

